EP 0071787 A3 19841010 - RUTHENIUM/CARBON-HYDROGENATION CATALYSTS, THEIR PREPARATION AND THEIR USE IN THE SELECTIVE HYDROGENATION OF UNSATURATED CARBONYL COMPOUNDS

Title (en)

RUTHENIUM/CARBON-HYDROGENATION CATALYSTS, THEIR PREPARATION AND THEIR USE IN THE SELECTIVE HYDROGENATION OF UNSATURATED CARBONYL COMPOUNDS

Publication

EP 0071787 A3 19841010 (DE)

Application

EP 82106324 A 19820715

Priority

DE 3130805 A 19810804

Abstract (en)

[origin: US4465787A] Ruthenium-on-charcoal and ruthenium-on-carbon black catalysts, containing from 0.1 to 5% by weight of iron, for the preparation of olefinically unsaturated alcohols by selective hydrogenation of the corresponding alpha , beta -unsaturated carbonyl compounds in the liquid phase are prepared by modifying the catalyst with iron only after it has been impregnated with the ruthenium compound, and reducing the catalyst with hydrogen at from 400 DEG to 600 DEG C., with thorough mixing. The catalysts according to the invention are particularly useful for improving the industrially difficult hydrogenation of citral to give the sought-after fragrances geraniol and nerol.

IPC 1-7

B01J 23/89; C07C 29/136; C07C 29/14; C07C 33/03

IPC 8 full level

B01J 23/89 (2006.01); C07B 61/00 (2006.01); C07C 27/00 (2006.01); C07C 29/132 (2006.01); C07C 29/136 (2006.01); C07C 29/14 (2006.01); C07C 29/141 (2006.01); C07C 29/145 (2006.01); C07C 33/02 (2006.01); C07C 33/03 (2006.01); C07C 67/00 (2006.01)

CPC (source: EP US)

B01J 23/8906 (2013.01 - EP US); C07C 29/141 (2013.01 - EP US); C07C 29/145 (2013.01 - EP US); C07C 33/02 (2013.01 - EP US); C07C 33/03 (2013.01 - EP US)

Citation (search report)

[A] GB 2024643 A 19800116 - DU PONT
[A] EP 0007101 A1 19800123 - BAYER AG [DE]
[AD] US 3284517 A 19661108 - RYLANDER PAUL N, et al
[A] DE 3019582 A1 19801204 - MAGYAR TUDOMANYOS AKADEMIA
[AD] EP 0024648 A1 19810311 - BASF AG [DE]
[AD] DE 2650046 A1 19770505 - RHONE POULENC IND

Designated contracting state (EPC)

CH DE FR GB IT LI NL

DOCDB simple family (publication)

EP 0071787 A2 19830216; EP 0071787 A3 19841010; EP 0071787 B1 19851121; DE 3130805 A1 19830224; DE 3267577 D1 19860102; JP H0339739 B2 19910614; JP S5827642 A 19830218; US 4465787 A 19840814; US 4536347 A 19850820

DOCDB simple family (application)

EP 82106324 A 19820715; DE 3130805 A 19810804; DE 3267577 T 19820715; JP 13478082 A 19820803; US 39778182 A 19820713; US 59064784 A 19840319